72
THE SIGN OF FOUR.
stone wall topped with broken glass. A single narrow iron-clamped door formed the only means of entrance. On this our guide knocked with a peculiar postman-like rat-tat.
'Who is there?' cried a gruff voice from within.
'It is I, McMurdo. You surely know my knock by this time.'
There was a grumbling sound and a clanking and jarring of keys. The door swung heavily back, and a short, deep-chested man stood in the opening, with the yellow light of the lantern shining upon his protruded face and twinkling, distrustful eyes.
'That you, Mr. Thaddeus? But who are the others? I had no orders about them from the master.'
'No, McMurdo? You surprise me! I told my brother last night that I should bring some friends.'
